Fernvale Limestone
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The Fernvale Limestone is a
geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
in
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,
Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...
,
Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...
,
Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...
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Oklahoma Oklahoma (; Choctaw language, Choctaw: ; chr, ᎣᎧᎳᎰᎹ, ''Okalahoma'' ) is a U.S. state, state in the South Central United States, South Central region of the United States, bordered by Texas on the south and west, Kansas on the nor ...
, and
Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...
. It preserves
fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...
dating back to the Ordovician period.


Paleontology


Brachiopods

*'' Lepidocyclus'' :''L. cooperi'' :''L. oblongus''


Conodont Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which ...
s

* ''
Acodus ''Acodus'' is an extinct genus of conodonts. Species * ''A. acutus'' * ''A. campanula'' * ''A. crassus'' * ''A. delicatus'' * ''A. deltatus'' * ''A. erectus'' * ''A. firmus'' * ''A. jonesi'' * ''A. kechikaensis'' * ''A. neodeltatus'' * ''A. ...
'' : ''A. unicostatus'' * '' Acontiodus'' : ''A. alveolaris'' * '' Ambalodus'' : ''A. triangularis'' * '' Amorphognatus'' : ''A. ordovicica'' * '' Aphelognathus'' : ''A. polita'' * '' Belodina'' : ''B. compressa'' : ''B. inclinata'' : ''B. ornata'' : ''B. penna'' : ''B. profunda'' * '' Cordylodus'' : ''C. delicatus'' : ''C. flexuosus'' * '' Dichognathus'' : ''D. brevis'' : ''D. scotti'' : ''D. typica'' * '' Distacodus'' : ''D. falcatus'' * '' Drepanodus'' : ''D. homocurvatus'' : ''D. suberectus'' * '' Eoligonodina'' : ''E. delicata'' * '' Icriodella'' : ''I. superba'' * '' Keislognathus'' : ''K. gracilis'' * '' Oistodus'' : ''O. abundans'' : ''O. inclinatus'' : ''O. parallelus'' : ''O. venustus'' * '' Ozarkodina'' : ''O. inclinata'' : ''O. tenuis'' * '' Paltodus'' : ''P. trigonius'' * '' Panderodus'' : ''P. compressus'' : ''P. ellisoni'' : ''P. fornicalis'' : ''P. gracilis'' : ''P. homosimilaris'' : ''P. panderi'' : ''P. simplex'' : ''P. sulcatus'' * '' Phragmodus'' : ''P. undatus'' * '' Prioniodina'' : ''P. furcata'' * '' Rhynchognathodus'' : ''R. divaricatus'' : ''R. typicus'' * '' Sagittodontus'' : ''S. robustus'' * '' Scolopodus'' : ''S. insculptus'' * '' Trichonodella'' : ''T. exacta'' : ''T. diminuta'' : ''T. tenuis'' * '' Zygognathus'' : ''Z. curvata'' : ''Z. mira''


See also

*
List of fossiliferous stratigraphic units in Arkansas This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites See also * Paleontology in Arkansas References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Arkansas Arkansas Stratigraphi ...
*
List of fossiliferous stratigraphic units in Tennessee This article contains a list of fossil-bearing stratigraphic units in the state of Tennessee, U.S. Sites See also * Paleontology in Tennessee References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Tennessee Tennessee Stratig ...
*
Paleontology in Arkansas Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the United States, U.S. state of Arkansas. The fossil Fossil record, record of Arkansas spans from the Ordovician to the Eocene. Nearly all of ...
*
Paleontology in Tennessee Paleontology in Tennessee refers to paleontological research occurring within or conducted by people from the U.S. state of Tennessee. During the early part of the Paleozoic era, Tennessee was covered by a warm, shallow sea. This sea was home to br ...


References

* Ordovician Arkansas Ordovician geology of Tennessee Ordovician southern paleotropical deposits {{Tennessee-geologic-formation-stub